Originally Posted by
Intheloonybin
I think it has alot to do with the bike style if that average is right (oh yeah, fitness too!). I could probably do average trips of 20 mph on a 10 mile ride on a road bike.
I used to be able to do it on 40 mile training rides, but I was 17, and a lot lighter then! (Makes you
really appreciate the shape you were in then

)
Yeah, I see what you're saying. I bet I could average over 20mph on my 18lb road bike, but I don't commute with it. It's not durable enough, no place to carry my stuff, and it's likely to get stolen.